Aerothlon Kleinarl 2021

library(knitr)
options(rgl.useNULL=TRUE)
library(rgl)

## Warning: package 'rgl' was built under R version 4.1.1

knit_hooks$set(webgl = hook_webgl)

source("mapporn_geoviz.R")

## Warning: package 'data.table' was built under R version 4.1.1

## Warning in showSRID(uprojargs, format = "PROJ", multiline = "NO", prefer_proj
## = prefer_proj): Discarded datum Unknown based on GRS80 ellipsoid in Proj4
## definition

## Warning: `as.tibble()` was deprecated in tibble 2.0.0.
## Please use `as_tibble()` instead.
## The signature and semantics have changed, see `?as_tibble`.